Roller-support.



PATENTED APR. 21, 1908.

H. J. DENGLER.

ROLLER SUPPORT. APPLICATION FILED AUG. 12. 1907.

m k H? rus NURRIS PET-81c: 60., IFu-munmn,

HENRY J. DENGLER, OF ROCHESTER, NEW YORK.

ROLLER-SUPPORT.

Specification of Letters Patent.

Patented April 21, 1908.

Application filed August 12, 1907. Serial ,No. 388,132.

To all whom it may concern;

Be it known that I, HENRY J. DENGLER, of

Rochester, in the county of Monroe and 'roller su ports of the type in which a roller is carrie' by adjustable earings and is held yieldingly against the work, has for an object to provide a construction which will enable the roller to operate with variable pressure -Witl10b1t causingthe yielding device to impose friction upon the roller adjusting device.

To this and other ends the invention consists in certain improvements and combinations of parts as will be hereinafter more fully descrlbed, the novel features being pointed out in the claims at the end of the specification.

In the drawings: Figure 1 is a side view of a board printing machine embodying my invention. Fig. 2 isan end view of the same machine. Fig. 3 is a detail sectional view through one embodiment of the roller support. Fig. 4 is a detail sectional view of an other embodiment. Fig. 5 is a detail sectional view of still another embodiment.

Similar reference numerals in the several figures indicate similar parts.

In some classes of machines, such as those for rinting on boards, it is necessary to have a roller bear with great but yielding pressure on an article passing therebeneath. This result has been effected heretofore in such a manner that the yieldin devices have imposed a great deal of riction on devices which have been employed for adjusting the roller to permit the latter to operate on articles of other thicknesses. In the present invention I employ for the yielding devices a stop Which-renders the device ineffective except when the roller is in operation, thus permitting the operation of the adjusting device without imposing friction thereon.

While the invention is herein described and shown as embodied in a machine for print' stance comprises a bed or table 1 having a lower roller platen 2 journaled thereon and arranged vertically above this roller platen is a roller 3 which it is desirable to support in the manner before mentioned. For this purpose the roller is mounted in bearin s 4 vertically adjustable on guides 5 and raised and lowered by suitable adjusting devices, preferably in the form of a pair of vertical screw shafts 6 operated by a horizontal shaft 6 The screws are movable slightly in an axial direction through their bearings which are in this instance in the form of horizontal arms 8 overhanging the bearings 4 and flanges or collars 7 rest upon the up er surfaces of the arms 8 and support the r0 ler.

The yielding devices are preferably in the form of yielding elements 80 surrounding the screws 6 and each having a movable abutment 9 at one end and an adjustable abutment 10 at the other end'to vary the compression of the yielding element, the adjusting, means referably comprising a nut 11 which is he d in its adusted position by a lock nut 12. The yielding devices are normally held away from the fixed abutments, which in this instance are the under faces of the bearings for the screw shafts 6, by a stop or shoulder 13, so that the screw shafts may be rotated freely to adjust the roller without friction due to the pressure applying devices. When something passes beneath the roller the movable shafts carry the movable abutments and their stops 13 upwardly until the bearings or fixed abutments 8 are engaged by the movable abutments 9 when the latter are stopped to compress the yielding elements and apply pressure to the device under the roller.

In the embodiment. of the invention shown vi'ding one of the screw shafts 6 with an integral enlargement 13 which also acts as a bearing to turn in the armor bearing 8.

and having an annular series of balls 16 supported thereon, as shown in Fig. 5.

From the foregoing it will be seen that I have provided a construction in which the pressure on the roller may be varied without imposing any friction on the screw shafts, so

in Figs. 1, 2 and 3, the stop is formed by prothat less power will be required to adjust the roller vertically.

I claim as my invention:

1. The combination with a roller and an adjustable bearing therefor, of an axially movable rotary shaft for adjusting said bearing, a fixed abutment, and a yielding device carried by the shaft, and normally out of engagement with the fixed abutment but adapted to contact therewith, when the shaft is moved axially.

2. The combination with a roller and an adjustable ,bearing therefor, of an axially movable rotary shaft for adjusting said bearing, a fixed abutment, a yielding device carried by the shaft, and a stop movable with the shaft and arranged to prevent the yielding device engagingthe abutment except upon the axial movement of the shaft to carry the device to the abutment.

3. The combination with a roller and an adjustable bearing therefor, of a rotary shaft for adjusting said bearing, a bearing for the shaft in which the latter is movable axially and a yielding device normally out of engagement with the bearing but adapted to cooperate therewith when the shaft is moved axially.

4E. The combination with a roller and an adjustable bearing therefor, of a rotary shaft for adjusting said bearing, a bearing for the shaft in which the latter is movable axially, a yielding device normally out of engagement with the bearing but adapted to cooperate therewith when the shaft is moved axially, and means for varying the compression of the yielding device.

5. In a roller support, the combination with a roller and an adjustable bearing therefor, of an axially movable rotary shaft for adjusting said bearing, a fixed abutment, a yielding device carried by the shaft, and normally out of engagement with the fixed abutment but adapted to contact therewith when the shaft is moved axially, and means for varying the compression of the yielding device.

6 The combination with a roller and an adjustable bearing therefor. of a rotary shaft for adjusting said bearing, a bearing for the shaft in which the latter is movable axially, a yielding device carried by the shaft adapted to contact with the bearing, when the shaft is moved axially, and a stop movable with the shaft and normally holding the yielding device away from the bearing.

7. The combination with a roller and an adjustable bearing therefor, of a rotary shaft for adjusting said bearing, a bearing for the shaft in which the latter is movable axially, a yielding device carried by the shaft adapted to contact with the bearing, when the shaft is moved axially, a stop movable with the shaft and normally holding the yielding device away from the bearing, and means for varying the compression of the yielding device.

8. The combination with a roller and an adjustable bearing therefor, of an axially movable rotary shaft for adjusting said bearing, a fixed abutment, a yielding device carried by the shaft, comprising a yielding element and a movable abutment for cooperating with the fixed abutment, and a stop carried by the shaft and cooperating with the movable abutment to normally hold the latter out of contact with the fixed. alnitment.

9. The combination with a roller, of yor tical guides, bearings in which the rollers turn movable on the guides, simultaneously operable axially movable screw shafts connected to the bearings, fixed abutments, yielding elements surrounding the shafts below the fixed abutments and having movable abutments to cooperate with the fixed abutments and stops on the shafts to engage the movable abutments, permitting the movable abutments to engage the fixed abutments when the screw shafts move axially.

HENRY J. DENGLEIR.

Witnesses:

HENRY HALL, -HAROLD H. Snuns. 

